1.\" Copyright (c) 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Berkeley Software Design, Inc. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. Neither the name of the University nor the names of its contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.\" @(#)sigpending.2 8.3 (Berkeley) 1/12/94 32.\" 33.Dd September 6, 2013 34.Dt SIGPENDING 2 35.Os 36.Sh NAME 37.Nm sigpending 38.Nd get pending signals 39.Sh LIBRARY 40.Lb libc 41.Sh SYNOPSIS 42.In signal.h 43.Ft int 44.Fn sigpending "sigset_t *set" 45.Sh DESCRIPTION 46The 47.Fn sigpending 48system call returns a mask of the signals pending for delivery 49to the calling thread or the calling process in the location indicated by 50.Fa set . 51Signals may be pending because they are currently masked, 52or transiently before delivery (although the latter case is not 53normally detectable). 54.Sh RETURN VALUES 55.Rv -std sigpending 56.Sh ERRORS 57The 58.Fn sigpending 59system call 60will fail if: 61.Bl -tag -width Er 62.It Bq Er EFAULT 63The 64.Fa set 65argument specified an invalid address. 66.El 67.Sh SEE ALSO 68.Xr sigaction 2 , 69.Xr sigprocmask 2 , 70.Xr sigsuspend 2 , 71.Xr sigsetops 3 72.Sh STANDARDS 73The 74.Fn sigpending 75system call is expected to conform to 76.St -p1003.1-90 . 77